. Breviora. 1996 PHENACOSAURUS IN WESTERN VENEZUELA 7. Figure 3. Phenacosaurus tetahi, holotype, MBLUZ R-215: Lateral view of head. Eight supralabials to below the center of the eye in the male holotype, 9 in the male paratype, 10 in the female paratype. Six to 9 postoculars on each side arch round the back of the orbit, the uppermost in contact dorsally with the posteriormost scale of semicircle of its side and laterally with the posteriormost super- ciliary. The temporal region divided into supra- and infratemporal by an intertemporal ridge, covered by 2-4 scales. The ridge strongly convex b
. Breviora. 1996 PHENACOSAURUS IN WESTERN VENEZUELA 7. Figure 3. Phenacosaurus tetahi, holotype, MBLUZ R-215: Lateral view of head. Eight supralabials to below the center of the eye in the male holotype, 9 in the male paratype, 10 in the female paratype. Six to 9 postoculars on each side arch round the back of the orbit, the uppermost in contact dorsally with the posteriormost scale of semicircle of its side and laterally with the posteriormost super- ciliary. The temporal region divided into supra- and infratemporal by an intertemporal ridge, covered by 2-4 scales. The ridge strongly convex but not shelf-like. The supratemporals larger, but variable in size close to the parietal ridges, smaller near the intertemporal ridge. The infra- temporals are larger close to the intertemporal ridge, smallest in a narrow zone in the center of the region, then again larger, almost as large as the uppermost infratemporal scales in a band from the ear to the comer of the mouth. The ear small, inconspicuous, smaller than many of the scales surrounding it, smaller also than the inferred interparietal. Ventral head scales (Fig. iy)—The mental incompletely divided, in contact with only 2 differentiated sublabials between the in- Figure 2. Phenacosaurus tetarii, holotype, MBLUZ R-215: Dorsal view of Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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